<template>
	<div class="login_con">
		<div class="login_box">
			<div class="avatar_box">
				<img src="../assets/logo.png" alt="">
			</div>
			<el-form ref="loginFormRef" :model="loginForm" :rules="loginFormRules" label-width="0px" class="login_form">
				<el-form-item prop="username">
					<el-input v-model="loginForm.username" prefix-icon="iconfont icon-user"></el-input>
				</el-form-item>
				<el-form-item prop="password">
					<el-input type="password" v-model="loginForm.password" prefix-icon="iconfont icon-3702mima"></el-input>
				</el-form-item>
				<el-form-item class="btns">
					<el-button type="primary" @click="login">登录</el-button>
					<el-button type="info" @click="resetLoginForm">重置</el-button>
				</el-form-item>
			</el-form>
		</div>
	</div>
</template>

<script>
	export default {
		data() {
			return {
				//这是登录表单的数据绑定对象
				loginForm: {
					username: "admin",
					password: "123456"
				},
				//这是表单的验证规则对象
				loginFormRules: {
					//验证用户名是否合法
					username: [{
							required: true,
							message: '请输入登录名称',
							trigger: 'blur'
						},
						{
							min: 3,
							max: 10,
							message: '长度在 3 到 10 个字符',
							trigger: 'blur'
						}
					],
					//验证密码是否合法
					password: [{
							required: true,
							message: '请输入登录密码',
							trigger: 'blur'
						},
						{
							min: 6,
							max: 15,
							message: '长度在 6到 15 个字符',
							trigger: 'blur'
						}

					]
				}
			}
		},
		methods:{
			//点击重置按钮，重置登录表单
			resetLoginForm(){
				this.$refs.loginFormRef.resetFields();
			},
			login(){
				this.$refs.loginFormRef.validate(async (valid)=>{
					if(!valid) return;
					const {data:res} = await this.$http.post("login",this.loginForm);
					if(res.meta.status !==200) return this.$message.error(res.meta.msg);
					this.$message.success("登录成功");
					window.sessionStorage.setItem("token",res.data.token);
					this.$router.push("/home");
				})
			}
		}
	}
</script>

<style lang="less" scoped>
	.login_con {
		background: #2b4b6b;
		height: 100%;
	}
	
	.login_box {
		width: 450px;
		height: 300px;
		background: #FFF;
		border-radius: 3px;
		position: absolute;
		left: 50%;
		top: 50%;
		/*位移*/
		transform: translate(-50%, -50%);
		.avatar_box {
			width: 130px;
			height: 130px;
			border: 1px solid #eee;
			border-radius: 50%;
			padding: 10px;
			box-shadow: 0 0 10px #eee;
			position: absolute;
			left: 50%;
			transform: translate(-50%, -50%);
			background: #fff;
			img {
				width: 100%;
				height: 100%;
				border-radius: 50%;
				background: #eee;
			}
		}
	}
	
	.btns {
		display: flex;
		justify-content: flex-end;
	}
	
	.login_form {
		position: absolute;
		bottom: 0;
		width: 100%;
		padding: 0 20px;
		box-sizing: border-box;
	}
</style>